Astronomy Picture of the Day . Upsilon Andromedae: An Extra Solar System . ... Credit: Lynette Cook Explanation: Yesterday, astronomers announced the discovery of the first system of planets around a normal star other than our Sun . Previously, only single planet star systems had been found. ... This star system is quite different from our own Solar System , however. ... The drawing above is an artist's depiction of the Upsilon Andromedae system and its innermost planet. ...

... 2008 November 17 . HR 8799: Discovery of a Multi-planet Star System . ... Explanation: How common are planetary systems like our own Solar System? In the twelve years previous to 2008, over 300 candidate planetary systems have been found orbiting nearby stars. ... Although the HR 8799 planetary system has significant differences with our Solar System, it is a clear demonstration that complex planetary systems exist, systems that could conceivable contain an Earth-like planet . ... About APOD | ...

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . ... Earth Satellites . ... A Scorched World: too distant to image, Kepler-10b is depicted here by a NASA artist (Image credit: NASA/Kepler Mission/Dana Berry) . The Kepler satellite looks for planets passing between their parent star and Earth. ... Placed beside our homeworld, Kepler-10b would be about 40% wider than Earth. ... Possibly only occasional jagged islands of metal and rock break the monotony of its glowing lava oceans. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Armagh Observatory, 11th August 2015: Astronomers at the 29th International Astronomical Union General Assembly in Honolulu, Hawaii, have announced the discovery of the tenth transiting тАЬcircumbinaryтАЭ planet, a result that brings the number of such known planets into double digits. A circumbinary planet orbits two stars, and like the fictional planet тАЬTatooineтАЭ from Star Wars, the planet has two suns in its sky. ...

... Check here for the latest news related to my research. Paper on the Discovery of ROXS 42Bb, a planetary mass companion 10.01.2013 I am co-author of a new paper accepted to ApJ Letters on the discovery of a co-moving companion to a tight, low mass binary in a star forming region. ... Paper on Fomalhaut Accepted to ApJ Letters 9.03.2013 I am co-author of a new paper submitted to ApJ Letters on re-analyzing deep archival Keck/NIRC2 data for additional companions to Fomalhaut. ...

... The study of extra solar planets will be one of the most important areas of research in astronomy in this century. ... The first planets outside the solar system were found in 1992 around the millisecond pulsar PSR B1257+12 by Alex Wolszczan at the Arecibo Observatory . ... Three space missions based on this principle (MOST, COROT and Kepler ) have already been launched or approved, and have the last one at least has the potential to find Earth-sized planets. ... SIM ( NASA ) is one of such missions...

... A brand new telescope that is still being built, called ALMA, has already made its first discovery! It has spotted two planets orbiting the star shown in this photograph, which are among the coldest planets ever found. ... Only about a quarter of ALMA s 66 dishes were ready to use when the astronomers discovered these planets. ALMA may be still under construction, but it is already the most powerful telescope of its kind," says Bill Dent, one of the astronomers reporting the new discovery. ...

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

The Discovery of the Galilean Satellites . ... Probably the most significent contribution that Galileo Galilei made to science was the discovery of the four satellites around Jupiter that are now named in his honor. Galileo first observed the moons of Jupiter on January 7, 1610 through a homemade telescope. He originally thought he saw three stars near Jupiter, strung out in a line through the planet. ... Galileo's Observations of Jupiter's Moons . ... Jupiter . ...

... More on 51 Peg: . The discovery of a Jupiter--mass planet in orbit around the solar--type star 51Peg has been reported by Michel Mayor and Didier Queloz (Geneva Observatory) on October 6th at the 9th Cambridge workshop on "cool stars, stellar systems, and the sun" held at Florence (Italy). ... Recall that the measurements of radial velocity only yield v sin i which in turn gives us M sin i. For most values of i, sin i will be greater than 0.5 and this gives a mass estimate of 0.5 Jupiter masses. ...

... In planets astronomy: . the relativist theory of the planets movement was found. ... the planets system of other stars were opened. ... In galaxy and out of galaxy astronomy: . It's found out the general constrution of the Galaxy and its main observed solids; . ... the methods of measuring the distances to the most remote objects in the Universe are found out; . ... it is found out that the galaxy accumulations are not haotic, but form the largescale celling structure of the Universe. ...

3) Planets and Brown Dwarfs . ... By its nature, this method is most sensitive to massive planets orbiting close to their stars. ... That means that some of the more massive extrasolar planets could actually be